Game crashing since Halo 2 update?

Hey, sorry if this isn’t the right place to put this but it’s the first thing I found. I downloaded the latest update that added Halo 2, but upon launching it would play the intro splash screen then crash before ever making it to the main menu. The error message is from Easy Anti-Cheat and says "Unknown file version (C:\Program Files(x86)\Steam\steamapps\common\Halo The Master Chief Collection\halo1\halo1.dll). I have already verified my game files on Steam and had no luck. Are there any known or possible fixes? To clarify, it was running fine in the previous versions; this is new to the latest update on May 12th. Thank you.

HELPPPPPPPP

Please don’t revive old topics thanks.
It’s better to start your own topic for any issues you are having. Detail out your problem and what you have tried so far